diff --git a/include/quicly/loss.h b/include/quicly/loss.h
index 04861100..2ab805c4 100644
--- a/include/quicly/loss.h
+++ b/include/quicly/loss.h
@@ -207,6 +207,7 @@ static int64_t quicly_loss_get_sentmap_expiration_time(quicly_loss_t *loss, uint
 
 inline void quicly_rtt_init(quicly_rtt_t *rtt, const quicly_loss_conf_t *conf, uint32_t initial_rtt)
 {
+    (void) conf;
     rtt->minimum = UINT32_MAX;
     rtt->latest = 0;
     rtt->smoothed = initial_rtt;
diff --git a/include/quicly/maxsender.h b/include/quicly/maxsender.h
index cc0e9e2a..82eaf54d 100644
--- a/include/quicly/maxsender.h
+++ b/include/quicly/maxsender.h
@@ -77,6 +77,7 @@ inline void quicly_maxsender_init(quicly_maxsender_t *m, int64_t initial_value)
 
 inline void quicly_maxsender_dispose(quicly_maxsender_t *m)
 {
+    (void) m;
 }
 
 inline void quicly_maxsender_request_transmit(quicly_maxsender_t *m)